Aachener Tor, city gate in Jülich, Germany

The Aachener Tor is a stone archway in Jülich flanked by a long wall that once protected the city. The arch displays Renaissance features with clean, simple lines and dates from 1548, while the wall behind it extends roughly 115 meters.

Construction began around 1548 under Duke Wilhelm V of Jülich-Kleve-Berg, after the 1547 fire, probably to plans by Alessandro Pasqualini. Excavations suggest the gate first stood in line with the 14th-century Hexenturm and was moved to its present site around 1648 during Spanish occupation. The gatehouse was demolished in 1859–1861, but the arch was kept when the road was rerouted.

The gate is also called Rurpforte, after the river Rur whose crossing it controlled. Its name refers to the road to Aachen, the direction from which travellers reached Jülich. Above the arch stood a brick gatehouse with bluestone ornament, and until 1798 a stone tablet named Duke Wilhelm V of Jülich-Kleve-Berg as builder and dated the gate to 1548.

The gate stands at the western edge of Jülich's old town, where the main road now passes just north of the arch. It is open to pedestrians and cyclists only and leads from the centre towards the Realschule and the promenade. A surviving section of the town wall and its ditch runs from the gate to Bastion III St. Jakob.

The gate was once part of a defense system with a moat that was originally about 4.5 meters deep and 30 meters wide. The moat is now partly filled, but sections of the old fortifications remain underground, showing how the city once protected itself.